Sorry for my lack of basic understanding that prevents me from stating my issue more clearly. I have been looking in Help for the Play function and not seeing a volume control that I think should be available. A simple example would be to combine a fundamental note with one overtone note and assign a volume independently to each. "Play[(10 * Sin[4402Pit]) + (5Sin[8802Pi*t]),{t,0,1}]" From what I hear it seems that the amplitude coefficients 10 and 5 are ignored in the sound output.

Thank you for a continued response...

Thanks for your response. What I don't understand is why the following two Play commands seem to respond with the same volume sound: Play[2Sin[4402Pit],{t,0,1}] Play[20Sin[4402Pit],{t,0,1}] I want to combine several amplitude waveforms each with its own volume coefficient.